Diversity pattern of bats (Mammalia: Chiroptera) in a modified tropical environment in the western region of Cameroon

Ervis, Manfothang Dongmo; Eric‐Moise, Bakwo Fils; Aaron, Mongombe Manga; Jules, Atagana Patrick; Fernand–Nestor, Tchuenguem Fohouo

doi:10.1080/15627020.2021.1932588

Cited by 4 publications

(3 citation statements)

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“…This different chimpanzee density estimated in a given area depends on the availability of floristic richness, diversity and composition, tree size and density, and human interference [18,42,63,69]. Further, the abundance of food items in a habitat minimizes the competition for food and increases the chances of survival and colonization of mammals [44]. Nest tree species selection habitat choices have also been reported for other great apes [16,22,62].…”

Section: Discussionmentioning

confidence: 95%

“…Human activities have been changing forest diversity and composition, and some forests have not been recovering after being faced with human disturbance. For example, the vegetation of the western region of Cameroon was originally described as moist semi-deciduous Guinean rainforest [30,41], currently, the vegetation cover of this area is dominated by a mosaic of crops [71], and very little of the region's native biota remained, a consequence of decades of deforestation to make way for agriculture and urbanization [44,45].…”

Section: Introductionmentioning

confidence: 99%

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The Chimpanzees (<i>Pan troglodytes</i>) of the Yoko Council Forest in Cameroon: Abundance, Activity Pattern and Threats

Alexis Kamgang,

Manfothang Dongmo,

Kirsten

et al. 2023

EEB

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Successful conservation and management of chimpanzees (Pan troglodytes) in Yoko Council Forest (YCF), Centre Cameroon, requires reliable estimates of their population size and density, habitat use and threats. Our study offers the opportunity to improve the knowledge on the population density, distribution and threats of the chimpanzee in this area. We used indirect survey methods using nest counts to estimate the decay rate of the nests. This approach consisted of locating and marking fresh nests (less than 48 hours old) at different periods of time and revisiting them at the end of the inventories to verify whether they had deteriorated or not. Human activities, habitat types, and nesting tree species were also assessed. The mean nest decay rate estimated using a logistic regression analysis was 77.53 days with a nest density of 69.3 [95% CI 54.9-86.7] nests/km 2 , for an estimated population of about 113 [95% CI 45-280] chimpanzees. In YCF, chimpanzees nest in Marantaceae forests and swampy forests, especially on Khaya grandifolia and Uapaca guineensis trees. Transhumance was the greatest threat in the area (75.33%), followed by hunting (13. 66%), wild sawing (8.81%) and fishing (2.2%). These anthropogenic perturbations were most observed in the south-west sector of the YCF. The area with the greatest density of nests occurred at a site least impacted by human activities. It is essential to regulate these activities in order to guarantee the sustainable management of this precious chimpanzee population.

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

The Chimpanzees (<i>Pan troglodytes</i>) of the Yoko Council Forest in Cameroon: Abundance, Activity Pattern and Threats

Alexis Kamgang,

Manfothang Dongmo,

Kirsten

et al. 2023

EEB

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“…Natural forested habitats vary from continuous and well-preserved forests, with the potential to maintain the original bat community, to riparian forests and forest fragments that can function as corridors and promote connectivity (Yoshikura et al, 2011;Akasaka et al, 2012;Toffoli and Rughetti, 2020). The preservation or restoration of secondary forests have also been suggested to provide resources for some less sensitive bat species (Louzada et al, 2010;Ervis et al, 2021). The second most cited measure was less intensive management (n = 85, 41.5%).…”

Section: Mitigation Proposalsmentioning

confidence: 99%

Global systematic map of research on bats in agricultural systems

Xavier,

Rainho,

Santos

et al. 2023

Front. Ecol. Evol.

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IntroductionThe conversion of natural habitats to agricultural systems is one of the main global threats to bats. Here, we aimed to develop a systematic mapping to identify publication trends and research gaps in studying bats and agricultural systems.MethodsWe reviewed 309 studies published between 1990 and 2021 that sampled bats in agricultural systems or evaluated the effect of these systems on these animals.ResultsWe found that most studies were conducted in the Palearctic and Neotropical regions (55.3%) and forest biomes (66.0%). Grassland-cropland systems (50.2%) and forest plantations that do not require cutting during the extraction of their products (47.9%) were more studied than forest plantations that require cutting (19.7%). Additionally, acoustic recordings (41.1%) and mist nets (34.3%) were the primary sampling methods used, with few studies combining these methods (7.1%). Also, most studies were conducted on a local scale (77.7%). The number of landscape-scale studies was smaller (34.3%) and concentrated in the Palearctic region (39.6%). Most studies assessed how agricultural systems affect biodiversity (62.1%). However, the phylogenetic and functional dimensions and b-diversity were little explored, with 2.5% and 23.3% of the biodiversity studies, respectively. Of the proposed mitigation measures, the most cited was including natural/semi-natural/potential bat habitats in cultivated landscapes (59.5%).DiscussionIn summary, our findings highlight the need for attention to the Afrotropic and Indo-Malaysia regions; predominantly non-forested biomes; plantations that require cutting during the extraction of their products; combined use of different sampling methods, as well as other methods as telemetry; use of multiple biodiversity descriptors and others biological descriptors, such as ecological services; landscape-scale studies and the role of conservation policies in promoting their conservation and raising awareness of their importance among producers and local communities. Filling these knowledge gaps is necessary to understand the factors influencing bat survival in cultivated landscapes. This is the only way to develop management and conservation strategies in these landscapes.

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Diversity and threats to large and medium-sized mammals in the northeastern part of the Mbangassina council forest, centre Cameroon

Kamgang,

Dongmo,

Tchoutezou

et al. 2024

Preprint

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The purpose of this study was to assess the diversity, abundance, and major threats to large- and medium-sized mammal species in the Mbangassina Council Forest in Centre region of Cameroon. The purpose was to assist the municipality in implementing its local strategy for sustainable development. The data were collected between March 6 and April 22, 2022, using the line-transects distance sampling method and reconnaissance walks (recce). A total of 33 transects were covered, for a completion rate of 97.45% in the study area. The results of the study confirm the presence of nine species of large and medium mammals belonging to four orders, four families dominated by Artiodactyles. The large and medium-sized mammals recorded during our surveys included the black-backed duiker (Cephalophus dorsalis), yellow-backed duiker (Cephalophus silvicultor), pangolin (Manis sp.), moustached monkey (Cercopithecus cephus), sitatunga (Tragelphus spekii), civet (Civettictis civetta), blue duiker (Philantomba monticola), and red-flanked duiker (Cephalophus rufilatus). The diversity index was 0.99 for a total mammal Kilometric Abundance Index (KAI) of 0.51 indices/km. However, the study area recorded a total KAI of 0.31 individuals per kilometer for 21 indices of human presence.The high value of the observed diversity index reflects the ecological importance of this ecological entity for the Municipality of Mbangassina, and the authorities must intensify their protection effort to reduce illegal activities in these areas.

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Diversity pattern of bats (Mammalia: Chiroptera) in a modified tropical environment in the western region of Cameroon

Cited by 4 publications

References 84 publications

The Chimpanzees (<i>Pan troglodytes</i>) of the Yoko Council Forest in Cameroon: Abundance, Activity Pattern and Threats

The Chimpanzees (<i>Pan troglodytes</i>) of the Yoko Council Forest in Cameroon: Abundance, Activity Pattern and Threats

Global systematic map of research on bats in agricultural systems

Diversity and threats to large and medium-sized mammals in the northeastern part of the Mbangassina council forest, centre Cameroon

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Diversity pattern of bats (Mammalia: Chiroptera) in a modified tropical environment in the western region of Cameroon

Cited by 4 publications

References 84 publications

The Chimpanzees (&lt;i&gt;Pan troglodytes&lt;/i&gt;) of the Yoko Council Forest in Cameroon: Abundance, Activity Pattern and Threats

The Chimpanzees (&lt;i&gt;Pan troglodytes&lt;/i&gt;) of the Yoko Council Forest in Cameroon: Abundance, Activity Pattern and Threats

Global systematic map of research on bats in agricultural systems

Diversity and threats to large and medium-sized mammals in the northeastern part of the Mbangassina council forest, centre Cameroon

Contact Info

Product

Resources

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The Chimpanzees (<i>Pan troglodytes</i>) of the Yoko Council Forest in Cameroon: Abundance, Activity Pattern and Threats

The Chimpanzees (<i>Pan troglodytes</i>) of the Yoko Council Forest in Cameroon: Abundance, Activity Pattern and Threats